/*
 * Copyright 2010 Mozzart
 *
 *
 * This file is part of mozzes.
 *
 * mozzes is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * mozzes is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with mozzes.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.mozzes.application.server.lifecycle;

/**
 * Thread that keeps server alive
 */
class KeepAliveThread  extends Thread {
	
	// 100 years :)
	private static final long MAX_ALIVE_TIME = 1000 * 60 * 60 * 24 * 365 * 100;

	private volatile boolean alive = true;
	
	KeepAliveThread() {
		super("KeepAliveThread");
		setPriority(MIN_PRIORITY);
		setDaemon(false);
	}
	
	@Override
	public void run() {
		while (alive) {
			try {
				Thread.sleep(MAX_ALIVE_TIME);
			} catch (InterruptedException e) {
				interrupted();
			}
		}
	}
	
	synchronized boolean die() {
		if (!alive)
			return false;
		
		alive = false;
		interrupt();
		return true;
	}
}